JPH0342827B2 - - Google Patents
Info
- Publication number
- JPH0342827B2 JPH0342827B2 JP23420885A JP23420885A JPH0342827B2 JP H0342827 B2 JPH0342827 B2 JP H0342827B2 JP 23420885 A JP23420885 A JP 23420885A JP 23420885 A JP23420885 A JP 23420885A JP H0342827 B2 JPH0342827 B2 JP H0342827B2
- Authority
- JP
- Japan
- Prior art keywords
- call
- circuit
- telephone
- switch
- hold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000001514 detection method Methods 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23420885A JPS6294059A (ja) | 1985-10-18 | 1985-10-18 | ドアホン電話切換装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23420885A JPS6294059A (ja) | 1985-10-18 | 1985-10-18 | ドアホン電話切換装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6294059A JPS6294059A (ja) | 1987-04-30 |
JPH0342827B2 true JPH0342827B2 (enrdf_load_stackoverflow) | 1991-06-28 |
Family
ID=16967386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23420885A Granted JPS6294059A (ja) | 1985-10-18 | 1985-10-18 | ドアホン電話切換装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6294059A (enrdf_load_stackoverflow) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63304757A (ja) * | 1987-06-05 | 1988-12-13 | Aihon Kk | 電話機能付ナ−スコ−ル端末装置 |
JPS6484960A (en) * | 1987-09-25 | 1989-03-30 | Matsushita Electric Works Ltd | Telephone device |
JPH0235559U (enrdf_load_stackoverflow) * | 1988-08-26 | 1990-03-07 |
-
1985
- 1985-10-18 JP JP23420885A patent/JPS6294059A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6294059A (ja) | 1987-04-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |